Question

If I am testing several different defined parameters can I call multiple xsl:when statements within on xsl:choose statement? So if I have:

<parameters>
                    <param id="1">
                        <key>Load</key>
                        <value>XML</value>
                    </param>
                    <param id="2">
                        <key>Input</key>
                        <value>Http</value>
                    </param>
                    <param id="3">
                        <key>Response</key>
                        <value>Y</value>
                    </param> 
</parameters> 

could I call three different <xsl:when> with a single <xsl:choose> to check the because I will have several <param> with different <value> that will later need to help call different templates.

Answer 1

Yes, sure, you can. You can also add an xsl:otherwise node to handle all other cases:

<xsl:choose>
    <xsl:when test="param/@id = '1'">
        <xsl:text>XML</xsl:text>
    </xsl:when>
    <xsl:when test="param/@id = '2'">
        <xsl:text>HTTP</xsl:text>
    </xsl:when>
    <xsl:when test="param/@id = '3'">
        <xsl:text>Y</xsl:text>
    </xsl:when>
    <xsl:otherwise>
        <xsl:text>Other format</xsl:text> 
    </xsl:otherwise>
</xsl:choose>

This is similar to the switch statement in C-like languages and Java, or the Select Case in VB.

Of course, you can check for arbitrary XPath expressions, e.g. you could check as well for

<xsl:when test="param/key = 'Input'">
    <!-- handle input -->
</xsl:when>